Saving mat file with prefix over loop

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adi kul
adi kul 2019-12-3
回答： Walter Roberson 2019-12-4
Hello,
Looking help in saving same .mat file with prefix over loop.
Facing error with following script:
clear all
close all
d = uigetdir();
filePattern = fullfile(d, '*.mat');
file = dir(filePattern);
for k = 1: numel(file)
baseFileName = file(k).name;
fullFileName = fullfile(d, baseFileName);
% my code here
outputBaseFileName = sprintf('Edited_%s', baseFileName);
outputFullFileName = fullfile(file(k).folder, outputBaseFileName);
save(outputFullFileName,'Variable_1','-append');
end
Error I am getting is:
Error using save
Unable to write file 'myPath\Edited_myFileName.mat'
No such file or directory.
Error in Untitled (line 29)
save(outputFullFileName,'Variable_1','-append');
  6 个评论
显示 4更早的评论
Stephane
Stephane 2019-12-3
You can cerate a dummy text file where you want to save your files, then compare its path+name to the output of outputFullFileName
adi kul
adi kul 2019-12-4
Thing is if I use fullFileName instead of outputFullFilename it indeed saves same file with added variable.
% outputBaseFileName = sprintf('Edited_%s', baseFileName);
% outputFullFileName = fullfile(file(k).folder, outputBaseFileName);
save(fullFileName,'Variable_1','-append');
I am not sure what's wrong in here. Here is the full code here:
clear all
close all
d = uigetdir();
filePattern = fullfile(d, '*.mat');
file = dir(filePattern);
for k = 1: numel(file)
baseFileName = file(k).name;
fullFileName = fullfile(d, baseFileName);
x=load(fullFileName)
Variable_1=x.Variable_4./x.Varibale_5;
outputBaseFileName = sprintf('Edited_%s', baseFileName);
outputFullFileName = fullfile(file(k).folder, outputBaseFileName);
save(outputFullFileName,'Variable_1','-append');
end

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采纳的回答

Walter Roberson
Walter Roberson 2019-12-4
clear all
close all
d = uigetdir();
filePattern = fullfile(d, '*.mat');
file = dir(filePattern);
for k = 1: numel(file)
baseFileName = file(k).name;
fullFileName = fullfile(d, baseFileName);
x=load(fullFileName)
x.Variable_1 = x.Variable_4./x.Varibale_5;
outputBaseFileName = sprintf('Edited_%s', baseFileName);
outputFullFileName = fullfile(file(k).folder, outputBaseFileName);
save(outputFullFileName, '-struct', 'x');
end

更多回答（1 个）

Ruger28
Ruger28 2019-12-3
编辑：Ruger28 2019-12-3
Your Edited .mat file does not exist, so you must create it. Check to see if it exists, if it does, append. If it does not, create it.
clear all
close all
d = uigetdir();
filePattern = fullfile(d, '*.mat');
file = dir(filePattern);
for k = 1: numel(file)
% my code here
outputFullFileName = fullfile(file(k).folder,sprintf('Edited_%s', file(k).name));
if exist(outputFullFileName,'file') % file exists
save(outputFullFileName,'Variable_1','-append');
else % file is new since you made it "edited", and needs created
save(outputFullFileName,'Variable_1');
end
end
  1 个评论
adi kul
adi kul 2019-12-4
this creates Edited_ .mat file but with only Variable_1 in it. While I want to have all the other variables from oriniglal .mat file and apend with Variable_1

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